Rendering apparatus



Oct. 2, 1928. V

RENDERING APPARATUS Filed July 28. 1924 z2 l z5 1J 'Z1 Q ,5 EZ/l/A/l/M la Patented Oct. 2,1928..

UNITED srar MICHAEL v. riovnr'r, or cAsrAnEA, PENNSYLVANIAJ REN-inname ArPatterns. V Y.

Application iled 31.115128,

This invention relates to al `rendering apparat-us for extracting fat from aniin'al'inatter, and lmore-particularly to apparatus of this class in whichfthe processes of extracting 'the fat and drying the residuum are successively performed in thesame tank or vessel. v; f f l A further. object of the invention is to provide a rendering. apparatus involving means of 'an improvedrnature for keeping 'the oils and `greases in the tank lseparatedV from the solids-duringtherendering 'proce essi; which structure permits vof the material'sy being thoroughly cookedy 'and dried without danger ofoverheati-ng or burning.

A still further object "of the -invention is 1 lto provide an attachment for application to standard -rendering apparatus, wherein the several Vobjects of Vthe invention may be attained, and which requires Vno alte'ratioiiin thefconst'ruction of vthe standard rendering apparatus, or in its yinstallation or opera tio'n. ,v l

Affurther fand particular object` of the invent-ion is to provide means ,whereby several'tr'eatments or rendering operations upon materials of different nature 'and requiring 'diifering treatments may be carried on inone rendering' apparatus, without ,change of the 'structure of the same or in its operation.

With the'se objects iin view,together with ot-he'i'swhich will appear as the description proceeds, the invention resides in thev novel construction, combination and arrangement of parts, all as will be described more lfullyherein'aft'er, illustrated` in thedraavi'ng's, andV more particularly pointed out the claims.

In the drawings; i

' Fig. Il isa fragmentaryview yof the lower i 'arranged upright, and may be substanti ally "similar tothe structure shown inthe Wannenwetscli ,et al. Patent, vvl\ To .73,5,987 andl ythe sameafter treatment. To this end, a diaphragm .orpartition 1924. sei-iai no. 728,777.

, reati;

`rifcqs y ing tliematerial through an opening or door l (not shown) at the upper end of the tank.

The lower part ofk the tank is'equippedavitha vdoor a5 closing an opening providing an outlet'forv the tank, and through which the cooked materials are to-bekdischarged. Connected with opposite sidesof thetank` near its bottom, arefsteamv inlet' pipes, one of which is indicated at 6, forthe introduction lof steam to theinterior-of `thevtank', while 7 representsa drain-for thetankfats. y

Extending up into the tank from the bot-` tom thereofvisan agitator'shaft, drivenv through the 5gears9f-1Ofrom` a 'suitable power wheel fll, and this shaft has connected thereto an agitator or stirrer 12,designed in standard reiidering'apparatus to break up the-stock and to producea circulation of the Y materialsin the tank. The-,structure thus far described is well known '-in Vthe art.,

The improvement., herein' to be'disclosed resides inthegprovision of separate 'coni-v partmentsfin atank of this kind, so arranged that the liquids, such as greases and` oils, will be kept 1separate from4 the solids and may be easilydrained off when required,

Vor left in the tank during the; *operation vwithout becoiijiingjreadily kmixedf-vvithlgtlfie s solids. The compartment -for treatment of the solids is -equippedwith an agitator 22 so that such materials may be kept constantly in afstate of lagitationfduringthe cooking operation. The agitators inV both compartments'jserve as, eJectoi-s for the ma'- terials therein when itjv isgdesired toremove wall 13 is arranged in the ta'nkabovethev l,bottom thereof and covering-the agitatonlQ.

This wall is ofre'qual diameter Withxthe ,v tankfand forms .a sub-Hoor. for the latter.-

The wall maybe secured in the tank in'jany preferred manner, however, it ,has `V been found expedient toprovidethe wall with depending flange 14Cv to'restupon the bot. tomof y.the tankand this flange' is offsuf- .A ficient: depth vtoV maintain thewall spaced a Yproper distance above' thebottom f and to house the `agitator '12.1.` vTo facilitate -apply.-

ing "this l .,sub--floorvtof` the' tank, the said wall or floorfislmade in threesections; a middle f sectionl, and sid'je sections 16, all shapednl so as f to` lit. together in the tank and toform a solid sub-Hoor therein;. vTheside sections yare provided at their inner edges ywith in-v Y warclly projecting ears to underlie and,.f f

i support the adjacent edges offthe middle section, "and throughlwhich boltsor .screws in the middle section.

v1S may be inserted to engage and anchor The outer edges Aor the seveial sections are provided withthe flange members 14, asshown, the same lforming a" substantially continuous supportingl Vlange for the sub-bottom or floor-in its entirety when the said sections are properly assembled; Certain portions of the tianges inaybe apertured'or cutaway to permit of steam lloeingadmitted to the under compartnient from the exterior ofthe tank, or to enable the tank yto hedrained of oils and greases; For instance, thel flange portion at the rear of the section '15 is apertured asl at T9 tof register with the steam linlet y6, while u portion ofthe flange of one of the side sections 16 is c ut away as at 20 to permit of unimpeded flow of'liquids beneath the subtloor to the drain pipe 7. y v i The flange portion at theiforward end of theiniddle section `iscut away as indicated M2721` directly opposite the'discharge Vopening .Y closed by the door 5, sothat materials in the under4 compartment may be ydischarged vthrough said door. It will be observed in this connection that the sub-floor is posi- ,tioned about, half way between the topV and ibottomof the discharge opening of the tank, so thatsolids on thetop'ofsaid sub-floor may be discharged through said doorway. f The shaft 8 extends upwardlyA through the central portion of the sub-floor, and is provided at its upper protruding end with an agitator 22 to stir and actfupon solids in the compartment above'the sub-floor; This agitatoriis similar in all respectsto the agitator 7'11'2, and just clears the upper sur-face of the walll 13. Both of the agitators, it will be undorstood,are fixed ,to the shaftY 8 so as to "rotaie therewith.

V.is

The partition or wallV 13 `is made `foraminous, so that liquids may drain from the upper compartment to the lower, and as the -wall'i'sjormed of metal plateI` the latter is f perforated `as at 23. The perforations in the middle section 15 may be elongated, While those in the outer sections are circular, and

fail of the said openings are preferabl 'bevfeled from the under side of the plate ti; prevent clogging of the passages and to facilitate cleanin of the partition,A

y In operation, thezstock 'or materialto be renderedis `out, and washed and introduced into thegtank through the-lilling opening in "ifh 'sual manner. Wahine disehargexdomy gclosed, as wllbe understood, the rendering QRQI8't0n, proceeds, Steam; 0r heatA being f warned Whse a@ agitaors 'arekeptin m0- l nljhe greasesand liquidsrendered will "settle and into the under compartment through' the 'openings in thepartition. At

a: properjtime, the valve (not shown) in the drai'nvpipe'? will be `openedtodraw of the Seaied liquids. At such time, almonds in dry blood, the same is fed'in as usual and the agitators are yset in motion. Suchof the Vliquidl as passe'sthrough to the lower kconi'- partment 'will be stirred by. thelower agitator while the upper agitator will create a v constantand violent yagitation and circulation `of the contents of the upper compart-l ment.l When the tank contents has reached the vdesired `degree of dryness, the door is opened and `the agitators set in motion, whereupon the contents of both. compart In the production ofycrackling, it has been the method heretofore to transfer the materials thereof to another machine to be kept hot until reinovedrfor the purpose'of being pressed into cakes. With the machine above mentionedsuch operations are unnecessary, as the present machine will house the material in proper heated condition after the free ,ments will be discharged throughthe outlet. I

oils and greases have been ,drawnoif and until ready for the compressing operation. In maintaining the materials in this'dry heated condition, it'will be understood that no steam will bey introduced to theY tank itself, but

merelyv to the `jacketbeneath Aor surrounding A the tank. y From the foregoing, it will heV seen that I have provided meansof decidedly/'simple nature for properly treating all kinds of` ioliv materialsV to be operated upon in. rendering n.

apparatus, lwithout changing the standard apparatus in any particular, and. without altering its operation, The sub-licor bottom herein referredto is preferablyy of relatively heavyY metal. l The tperforations therein may be of one size or shapeor theymay vary `accordingly as Vnecessity and efficiency invoperation may require. This sub-H001',

urthermore, may be vof more or less reticulated construction, or may beslatted if dev sire'd,l without departing vfrom the spirit of the inventionl herein disclosed.- It will be understood, furthermore,`V that minorV ychangesin the details ofthe construction, and the manner of'assembling the several parts and associatingr them' together, maybe v resorted to, if desired; without departing from the inventionjas defined 'by the claims. v

vHaving thusf described`myfinvention,f1 claim:

tion with a tank having -a discharge opening;

1. In a rendering apparatllSlthicombina- Y of a sub-bottom within said tank disposed in a horizontal plane lextending substantially midway through said opening, and agiported sub-bottom disposed within said tank at a level substantially midway between the top and bottom of said opening, the supy porting ange being out away from that portion of the sub-bottom adjacent to the said opening, and agitators in said'tank one f above and the other below said sub-bottom,

each of the agitators being disposed respectively at al level betweenythe lower and upper edges of said openings. y n

3. In a vertically arranged rendering tank,-

a sectional perforated sub-bottom, comprising a middle and end sections having abut- Y ting edges, earsv projecting from the end sections and underlying the abutting edges of the middle section, bolts passing through said ears and said middle section to hold said sections together, flanges depending from the outer edges of all of said sections .to form al Y support for said! sub-bottom, and a part of L the flange on one of saidsections cut away to form an entry way beneath said subA bottom. Y Y 'In testimony whereof I affix my signature.

MICHAEL v. LovETT,. 

